#1C257A#1C257A

#1C257A is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.1% C 0.143 H 270.9°. Best body text is #FFFFFF at 13.17:1 contrast (WCAG AA passes).

Color values

HEX	#1C257A
RGB	rgb(28, 37, 122)
HSL	hsl(234, 63%, 29%)
HSV	hsv(234, 77%, 48%)
CMYK	cmyk(77%, 69.7%, 0%, 52.2%)
CIE-LAB	lab(19.94, 27.97, -49.28)
CIE-LCH	lch(19.94, 56.66, 299.58°)
OKLab	oklab(32.12% 0.0022 -0.1425)
OKLCH	oklch(32.12% 0.143 270.9)
XYZ	xyz(4.6521, 2.9747, 18.7376)
Luminance	0.0297 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1C257A #7A711C

analogous

#1C547A #1C257A #421C7A

triadic

#1C257A #7A1C25 #257A1C

tetradic

#1C257A #7A1C54 #7A711C #1C7A42

square

#1C257A #7A1C54 #7A711C #1C7A42

split-complementary

#1C257A #7A421C #547A1C

monochromatic

#060819 #111648 #1C257A #2734AC #3E4CD3

Accessibility & contrast

On white

13.17

#1C257A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#1C257A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1C257A

13.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1C257A	#FFFFFF	#000000	##FFFFFF
##1C257A	1.00	13.17	1.60	13.17
#FFFFFF	13.17	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00357D

Deuteranopia (green-blind)

#002C78

Tritanopia (blue-blind)

#003C4C

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #1c257a;
/* rgb */ color: rgb(28, 37, 122);
/* oklch */ color: oklch(32.1% 0.143 270.9);

Tailwind

colors: {
  custom: {
    50: '#685fa1',
    500: '#1c257a',
    950: '#000000',
  },
}

SCSS

$custom: #1c257a;
$custom-light: #685fa1;
$custom-dark: #000000;

JSON

{
  "hex": "#1c257a",
  "rgb": {
    "r": 28,
    "g": 37,
    "b": 122
  },
  "hsl": {
    "h": 234.255,
    "s": 62.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.32119,
    "c": 0.14255,
    "h": 270.9
  },
  "luminance": 0.02975
}

Semantic roles & 50–950 ramp

primary

#1C257A

secondary

#AEA444

accent

#D642E6

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #1C257A

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →